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Catalyst composition for production of rigid polyurethane foam and isocyanurate-modified rigid polyurethane foam and raw-material composition containing the same

a technology of rigid polyurethane foam and catalyst composition, which is applied in the direction of physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, etc., can solve the problems of deteriorating surface brittleness, insufficient adhesiveness to face materials, and deteriorating surface brittleness, etc., to enhance the storage stability of raw material-blended composition, inhibit hydrolysis, and improve the hydrolysis of polyester polyol remarkably

Active Publication Date: 2012-02-09
TOSOH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The catalyst composition significantly improves the storage stability and physical properties of the foams, including flowability and adhesiveness, while reducing the amount of hydrofluorocarbon needed, enhancing environmental safety and economic efficiency.

Problems solved by technology

However, with regard to the raw material-blended compositions containing water, which is an inexpensive and environmentally less problematic blowing agent, or a specific hydrocarbon (HC) and / or hydrofluorocarbon (HFC)-based blowing agent, there arise problems such as a decreased storage stability as well as deteriorated surface brittleness (friability), insufficient adhesiveness to face materials, decreased dimensional stability of foams, and deteriorated flame retardancy, in the rigid polyurethane foam and isocyanurate-modified rigid polyurethane foam products produced therefrom.

Method used

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  • Catalyst composition for production of rigid polyurethane foam and isocyanurate-modified rigid polyurethane foam and raw-material composition containing the same
  • Catalyst composition for production of rigid polyurethane foam and isocyanurate-modified rigid polyurethane foam and raw-material composition containing the same
  • Catalyst composition for production of rigid polyurethane foam and isocyanurate-modified rigid polyurethane foam and raw-material composition containing the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0092]Production of Catalyst A1 (solution of 50% of tetraethylammonium acetate and 50% of ethylene glycol)

[0093]An aqueous tetraethylammonium hydroxide solution (1 mol) was charged into a flask and, while the solution was cooled so as to maintain it at room temperature, acetic acid (1 mol) was added thereto to obtain a tetraethylammonium acetate salt. Thereafter, ethylene glycol was added as a solvent so as to be a predetermined concentration and then water was removed by evaporation using an evaporator to obtain a solution of 50% of tetraethylammonium acetate and 50% of ethylene glycol.

preparation example 2

[0094]Production of Catalyst A2 (solution of 50% of tetramethylammonium acetate and 50% of ethylene glycol)

[0095]A solution of 50% of tetramethylammonium acetate and 50% of ethylene glycol was obtained in the same manner as in Preparation Example 1 except that an aqueous tetramethylammonium hydroxide solution (1 mol) was used instead of the aqueous tetraethylammonium hydroxide solution.

preparation example 3

[0096]Production of Catalyst A3 (solution of 50% of tetramethylammonium formate and 50% of ethylene glycol)

[0097]A solution of 50% of aqueous tetramethylammonium formate and 50% of ethylene glycol was obtained in the same manner as in Preparation Example 2 except that formic acid (1 mol) was used instead of acetic acid.

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Abstract

An object of the present invention is to provide a catalyst for producing a rigid polyurethane foam and an isocyanurate-modified rigid polyurethane foam excellent in storage stability in the case that water is contained as a blowing agent, and a raw material-blended composition using the same.In the present invention, a catalyst composition comprising the following amine compounds of (A) and (B) and / or (C) is used and further, a raw material-blended composition further containing a polyol component and water is used.(A) A quaternary ammonium salt represented by the following general formula (1):wherein each of R1 to R3 represents a hydrocarbon group having 1 to 12 carbon atoms, R4 represents an alkyl group or an aromatic hydrocarbon group having 1 to 18 carbon atoms, and X represents an organic acid group having an acid dissociation constant (pKa) of 4.8 or less;(B) A hydrophobic amine compound;(C) A heterocyclic tertiary amine compound.

Description

TECHNICAL FIELD[0001]The present invention relates to a catalyst composition used in producing a rigid polyurethane foam and / or an isocyanurate-modified rigid polyurethane foam, a raw material-blended composition containing the catalyst composition, a polyol component and water, and a process for producing a rigid polyurethane foam and / or an isocyanurate-modified rigid polyurethane foam by reacting the raw material-blended composition with a polyisocyanate.BACKGROUND ART[0002]Since rigid polyurethane foams and isocyanurate-modified rigid polyurethane foams are excellent in heat insulation and self-adhesiveness, they are widely used as heat-insulating materials for electric refrigerator, building materials, and the like. The rigid polyurethane foams and isocyanurate-modified rigid polyurethane foams to be used for these applications are generally obtained by a method of mixing, with a polyisocyanate, a raw material-blended composition having mixed therewith a polyol component, a blow...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08J9/00C08G18/18B01J31/04C08G18/42B01J31/02C09K3/00C08G18/20
CPCC08G18/1875C08G18/20C08G2101/0025C08G2110/0025C08F4/00C08G18/18C08G18/00
Inventor TOKUMOTO, KATSUMITAMANO, YUTAKA
Owner TOSOH CORP